Study Jams Weather Instruments

You live in Pennsylvania and are getting ready to vacation in California. How can you find out the weather in California?

• by reading your barometer

• by checking your thermometer

• by looking out your window

• by looking at a weather map

Your local meteorologist announces that the humidity today is at 95%. What does this mean?

• The air pressure is very low

• There is a high chance of getting snow

• There is a great deal of moisture in the air

• The air is very dry

What does a hygrometer measure?

• temperature

• humidity

• air pressure

• wind speed

How does an anemometer work?

• small cups spin in the wind, and it measures how fast they go

• it determines how heavy the air is and then predicts storms

• rain or snow falls onto it and it measures how much there is

• it catches the wind and points in the direction the wind is blowing

Which instrument measures air pressure?

• thermometer

• anemometer

• hygrometer

• barometer

Why does low air pressure usually indicate bad weather?

• It puts people in low spirits.

• Storms form in low pressure.

• It means cold weather is coming.

• The humidity is always low.

Why do scientists need to be careful where they place a rain gauge?

• The rain gauge is a delicate instrument with many breakable parts all over it.
• A rain gauge cannot be placed in any area that gets a lot of precipitation.
• A rain gauge has sharp edges that can cut scientists’ hands.
• If the gauge is blocked from rain, it won’t accurately measure the amount of rain.